T Nation

Morning or Evening Blood Levels

I’ve asked this a number of times on other posts regarding what time of day people are having thier testosterone checked. What time of day are you all having you bloodwork done, and what kind of variation are you seeing between morning and evening results?

Ive heard its best having it done in the morning before 10am. Im shooting for 8 or 9am.

Most insurance companies require the test to be done before 10am, as this is when natural testosterone is the highest (after you wake up). It drops throughout the day, so getting evening blood tests could indicate a false low.

JC